Cell transport

Osmosis is the movement of _____ across a membrane.

• food
• energy
• oxygen
• water

Which is true about active transport?

• It requires energy
• it does not require energy
• It moves substances down the concentration gradient
• it moves material from high to low concentration

The diffusion of water molecules through a selectively permeable membrane is:

• Homeostasis

• Osmosis

• Active Transport

• Equilibrium

The movement of molecules from a place where there is a greater/higher concentration to an area where there is lesser/lower concentration is:

• Homeostasis

• Diffusion

• Endocytosis

• Active Transport

A selectively permeable membrane

• allows all substances to enter and leave

• prevents all substances from entering or leaving

• allows certain size substances to enter and leave

• allows only waste materials to leave

An example of diffusion is

• water molecules moving into a plant cell after rain

• red food coloring moving through water until the water is pink

• water molecules leaving the cells of a freshwater fish, when placed in a saltwater tank

• none of the above

Which way will water molecules move if a red blood cell is placed in distilled water?

• Out of the red blood cell

• Into the red blood cell

• Water molecules will move in and out at the same rate

• No water molecules will move

Molecular movement continues even when there is no overall change in concentration. This is referred to as:

• active transport

• passive transport

• homeostasis

• equilibrium

The difference in the concentration of a substance across a space is called:

• kinetic energy gradient

• solvent gradient

• concentration gradient

• dynamic equilibrium

Definition of Cell Transport

• Driving to a gas station.

• Water helps the body.

• Movement of material across cell membranes.

• Bape is a bear.